Wheel-plow



(No Model.) .R. A. THOMPSON.

, WHEEL PLOW. No. 293,818.* Patented Feb. 19., 1884.

(FIGJ.

- UNir-nn STATES PATENT OFFICE.

ROBERT A. THOMPSON, OF MONTROSE, MISSOURI.

, WHEEL-PLOW.

SPECIFICATION forming part of Letters Patent No. 293,818, dated February19, 1884:-

(No model.)

To aZZ whom, it may concern.-

Be it known that 1, ROBERT A. THOMPSON, a citizen of the United States,residing at Montrose, in the county of Henry and State of Missouri, haveinvented certain new and useful Improvements in WVheel-Plows; and I dodeclare the following to be a full, clear, and exact description oftheinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to theletters and figures of reference markedthereon, which form a part of this specification.

This invention relates to improvements in plows; and it consists in theconstruction, combination, and arrangement of the several parts, as willbe hereinafter fully described, and specifically pointed out in theclaims.

In the drawings, Figure l is a perspective view. Fig. 2 is a rearelevation of a plow constructed according to my invention; and Fig. 3 isa detail view, as will be described.

a is the arch, constructed with the lateral extension, a, having thetongue a secured thereto. This extension a projects over thefurrow-wheel, and its end is bent slightly over the periphery of thesame, as shown.

a is a scraper pivoted on the extension a in position to be turned downagainst the side of the furrow-wheel. 1 By this construction it will beseen that the periphery and edge of the furrow-wheel are kept free fromaccumulations and the draft of the machine is lightened. The side bars,a a, of the arch are slotted to receive the axle of the wheel. The arm ais constructed with a transverse slot or opening, a, near its lower end.

I) b are the axles. The axle bis constructed with a shank, If, whichslides in the slot in arm a andis adjusted in the said slot by means ofthe lever hereinafter described. The spindle b of this axle is bentdownward, so that the wheel 0, journaled squarely thereon,will set at anangle to the ground and to the arm (L as shown.

(I is a lever pivoted to the cross-bar of the arch a, and having one endconnected with the shank b of axle I), and its other end arranged inconvenient reach of the operator. By this lever it will be seen thewheel 0 may be set in or out, as may be desired by the operator.

b is a mortise cut in the arm a", and opening shown. The opening at theside is contracted or made smaller than the inner portion of the made toconform to the shape of the mortise, as shown in Fig. 3. The shank isretained from dropping from the mortise If by the cross pin b 7 I e is aslot cut through the back of the arm (0* into the mortise If. e is a pinpassed through slot e and into the shank of the spindle b.

j is a lever pivoted on the arch a, and connected with the pin 0 by therodf, as shown,

thereon, can be moved up or down, as desired.

\Vhere so desired, racks may be arranged with reference to the levers dand f, so as to hold them at any point desired, and thus providefacilities for securing the laterally-movable inclined wheel a and'thevertically-movable wheel 0 at any suitable point desired by theoperator. 0

The main plow-frame G is composed of the bars 9 g and the cross-bar asshown. The -bars 9 9 have their rear ends pivoted, re-

spectively, to the bars a a" of the wheel-frame, and their forward endsare connected by the cross-bar g", as shown. The whiffletree is coupledto the cross-bar g, as shown.

9 is a bar made fast to bar 9 and extended up and bent at g, and adaptedto engage the teeth of the rack-bar mounted on the plowstandard, ashereinafter described.

it h are the rods forming the plow-standard. They are separatedattheirgforwardiends, and are pivoted on or near the opposite ends of therod 9 and their rear ends welded together, forming, substantially, asingle bar.

7b2 is the plow.

I? is a rod secured at the convergent point of rods h h, andcurvedjupward and forward, forming a loop, which is engaged by the leverhereinafter described.

'5 is a rack-plate mounted on the plow-standard, and having its upperedge curved and provided with a series of notches, as shown.

This plate is arranged in position to engage at the bottom and outerside of the same, as

so that the axle b and the wheel 0, spindled mortise, and the shank ofthespindle b is the bent portion of rod in the operation of the device,as will be described.

j is an L-shaped lever pivoted on a bracket mounted on the rod 9 nearits rear end. One

arm of this lever extends up within reach of the driver, and its otherarm extends forward to the bar If, and its end is bent at right anglesto enter the loop formed by the said bar, as before described. I

In operation, it will be seen that by throwing the wheel 0 out, asindicated in dotted lines, Fig. 2, the effect will be to force the plowslightly to the left, aiding in cutting a straight furrow, and that bythe vertical adjustment of the wheel a the sulky is made to conform toor adapt itself to any inequalities in the ground being worked. By meansof the lever j the plow can be raised so as to bring its point at anyproper angle to the ground, and when it has been raised as high asdesired the plow-standard and the main frame can be locked together bymeans of the rod 9" and rack i,- or the'plow-standard can be left toswing free on the bar y in is the driv'crs seat.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. In a plow, the combination of the wheels, the arch having its top barextended over the furrow-wheel in position'to scrape the peripherythereof, and the scraper a, pivoted 011 the extension a, and working ina line at right angles to the plane of the wheel, and adapted to beturned down against the edge'thereof, 5 and provided with a handle aboveits pivotal center, whereby it may be operated by the driver,substantially as set forth.

2. The improved sulky for plows, consisting of the arch having thedepending arm a, constructed with a vertical mortise, I), open at itslower end and outer side, and having its inner portion made larger thanits open side, the arm at, having lateral opening a, the wheel 0, havingits axle b fitted to and sliding vertically in the mortises I), and thefurrowwheel 0, spindled on the axle Z), the shank I) of which is placedand adjustable laterally in the opening a, and thelevers f andd,connected with and operating, respectively, the wheel a and the wheel0, as set forth.

3. In a wheel-plow, the combination, sub stantially as described, of theframe G, having its rear end pivoted to the wheel-frame and extendedforward therefrom,- the plow-standard having its forward end pivoted tothe forward end of the frame G, the rack i, mounted on theplow-standard, the bar 9 secured to the frame G, and adapted to engagethe rack 1 and the lcverj, pivoted to the frame G, and connected withthe plow-standard, as and for the purposes specified.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT A. THOMPSON.

IVitnesses:

NEw'rouW. GREEK, .Lrs. H. VICKARS.

